Unable to send email to vendor on PO confirmation.

Hi All,

I am using MS Dynamics AX 2012 R2 and trying to send email to vendor on PO confirmation but i am getting below error.

I have followed below link to configure setups for emailing.

https://timsaxblog.wordpress.com/2015/07/07/how-to-e-mail-purchase-orders-to-vendors-in-dynamics-ax-2012-r3/

Can anyone help how can i resolve this error. Outlook is also configured on my Terminal Server.